National Cyber Awareness System

Vulnerability Summary for CVE-2013-1864

Original release date:
05/23/2014

Last revised:
01/14/2015

Source:
US-CERT/NIST

Overview

The Portable Tool Library (aka PTLib) before 2.10.10, as used in Ekiga before 4.0.1, does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted PXML document containing a large number of nested entity references, aka a "billion laughs attack."

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

Access Vector: Network exploitable

Access Complexity: Medium

Authentication: Not required to exploit

Impact Type: Allows disruption of service

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